[PATCH] autofs4: autofs4_follow_link false negative fix

The check for an empty directory in the autofs4_follow_link method fails
occassionally due to old dentrys.  We had the same problem
autofs4_revalidate ages ago.  I thought we wouldn't need this in
autofs4_follow_link, silly me.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 27e17f96cada446d0858405493b46203fd0d57c3..0ec24835239f59a9b0b69e83f2abb48b4acd9b1e 100644 (file)
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -359,7 +359,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
         * don't try to mount it again.
         */
        spin_lock(&dcache_lock);
-       if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
+       if (!d_mountpoint(dentry) && __simple_empty(dentry)) {
                spin_unlock(&dcache_lock);
 
                status = try_to_fill_dentry(dentry, 0);